In-vitro cardiac pacemaker wire fixing inspection device

Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to an in-vitro cardiac pacemaker wire fixing inspection device which comprises a base, a reel, a tensioner and a steering mechanism. The reel is connected to one side of the top of the base, the tensioner is connected to the other side of the top of the base, the steering mechanism is connected to the top of the base and located between the tensioner and the reel, and the steering mechanism is used for enabling a cardiac pacemaker wire to be subjected to tension in different directions; the cardiac pacemaker lead sequentially bypasses the reel, the steering mechanism and the tensioner; according to the invention, the tension range of the tensioner is adjusted for multiple times, so that the tension range under the condition that the lead fixation meets the requirement is determined under each condition, and the tension range is used as the lead fixation standard, so that the detection process is simplified, complex operation and calculation are not needed, and the accuracy of the detection result is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device for checking the fixing of an external cardiac pacemaker lead. Background Art

[0002] The pacemaker is a commonly used cardiology and cardiac surgery medical device. It is an effective treatment device for patients with bradycardia. Usually, the electrode is implanted into the heart along the vein, and the pacemaker host is sutured under the patient's skin. However, the operation requires a lot of preparation time and the operation process is long. In some emergencies, there is no time to permanently fix the electrodes and the host, and the patient can only be installed with an external cardiac pacemaker; the electrodes of the external pacemaker are sutured on the myocardium, and the electrodes extend out of the body through the wires and are connected to the pacemaker host; therefore, it is usually necessary to firmly fix the host and the wires outside the body, otherwise the patient's movement will cause the wires to be pulled, causing the electrodes to fall off or causing bleeding, thrombosis and other dangerous situations. In order to avoid this situation, various methods are used in clinical practice to fix the host and the wires; however, there is no method to check whether the wires are firmly fixed. At present, it can only rely on the experience of doctors and nurses, or rely on manual touch and pulling to check whether they are firmly fixed, so it is difficult to be objective and accurate.

[0003] This problem not only exists in clinical surgery, but is even more serious for the teaching of clinical doctors. Currently, the teaching of pacemaker surgery mostly focuses on the conduct of the surgery itself, and the relevant teaching aids only involve the operation of the heart and the suturing of the skin. However, there is no instrument that can objectively and accurately check the final step of wire fixation. Therefore, it is impossible to feedback to medical students whether the wire is firmly fixed. In other words, accurate and quantitative evaluation results are very important for doctors' learning and practice process.

[0004] In response to the above problems, patent number: CN114392482B discloses an external cardiac pacemaker lead fixation inspection device, including a base, a winding wheel, a circular track, a wire puller, a collimator, a lead, a connector and a controller; by executing four inspection modes through the controller, the fixation of the external cardiac pacemaker lead can be accurately and comprehensively inspected, and the inspection is accurate and the false alarm rate is low.

[0005] However, the external pacemaker lead fixing inspection device still has the following problems during use: 1. The external pacemaker lead fixing inspection device requires different driving forces of multiple motors to calculate the fixing status of the pacemaker lead, and the calculation is complicated, which makes it not practical in the actual teaching process; 2. In addition to the force required for the experiment, the pacemaker lead on the external pacemaker lead fixing inspection device is easily affected by other forces due to its excessive length, which may cause inaccurate detection results. Summary of the invention

[0006] In view of the above-mentioned problems, the present invention aims to provide an external cardiac pacemaker lead fixation inspection device to at least solve the problem of complex detection and inaccurate detection results of the external cardiac pacemaker lead fixation inspection device in the prior art.

[0007] The main idea of ​​the technical solution adopted by the present invention is: An external cardiac pacemaker lead fixing inspection device is designed, comprising: a base, and a tensioner, a guide bracket, a steering mechanism, a guide bracket and a winding wheel which are sequentially connected to the top of the base. The cardiac pacemaker lead passes through the above structures in sequence and is wound on the winding wheel. The bottom of the tensioner is connected to a cylinder, and the bottom of the winding wheel is connected to a first motor. The first motor is started, and the first motor drives the winding wheel to rotate. At this time, the cardiac pacemaker lead is subjected to uniform horizontal tension. The value on the display screen of the tensioner is observed. The first motor continues to rotate to adjust the tensioner value. When the cardiac pacemaker lead moves, the magnitude of the tension when the cardiac pacemaker lead is pulled is recorded at this moment, so as to detect the fixation of the cardiac pacemaker lead when the cardiac pacemaker lead is subjected to horizontal force. The invention relates to a method for fixing the cardiac pacemaker wire by recording the tension force when the cardiac pacemaker wire is pulled and comparing the tension force change in the above situation to determine the influence on the fixation of the cardiac pacemaker wire when the cardiac pacemaker wire is affected by radial force; the motor of the guide bracket is turned on to enable the guide bracket to drive the cardiac pacemaker wire and apply tension in different directions to the wire, observe the value change of the tension meter and compare the tension force when the cardiac pacemaker wire is pulled with the other two situations to determine the influence on the fixation of the cardiac pacemaker wire when the cardiac pacemaker wire is affected by tension in different directions.

[0008] In order to achieve the above object, the technical solution adopted by the present invention to solve the technical problem is: An external cardiac pacemaker lead fixing inspection device comprises: a base, a winding wheel, a tensioner and a steering mechanism; The winding wheel is connected to one side of the top of the base, the tensioner is connected to the other side of the top of the base, the steering mechanism is connected to the top of the base and is located between the tensioner and the winding wheel, and the steering mechanism is used to make the pacemaker wire subject to tension in different directions; The pacemaker wire is passed through the winding wheel, steering mechanism and tensioner in sequence.

[0009] Further, the steering mechanism comprises: a housing, a support rod and a rocker; The top of the shell is a semicircular structure, and the support rod is located at the bottom of the semicircular structure; The top of the rocker is slidably connected to the top of the shell, and the bottom is movably connected to the support rod.

[0010] Furthermore, a first through hole is provided at the top of the rocker, and the first through hole is used to pass a pacemaker wire.

[0011] Further, two legs are connected to the bottom of the tensioner, and the legs are connected to the cylinder; The cylinder is installed on the base and is used to change the height of the tensioner to change the force direction of the pacemaker wire.

[0012] Furthermore, a first motor is connected to the bottom of the winding wheel, and the first motor is installed on the base. The first motor is used to provide stable pulling force for the pacemaker wire.

[0013] Furthermore, the first motor outer casing is provided with a fixing piece, and the bottom of the fixing piece is connected to the top of the base.

[0014] Furthermore, two guide brackets for maintaining a stable pulling force are connected to the top of the base; The two guide brackets are respectively arranged between the tensioner and the steering mechanism, and between the steering mechanism and the winding wheel.

[0015] Furthermore, a through slot is provided on the top of the guide bracket, a universal ball head is rotatably connected in the through slot, and a second through hole for passing the pacemaker wire is provided in the middle of the universal ball head.

[0016] The use process of the present invention is as follows: S1, passing the pacemaker wire through the winding wheel, the guide bracket, the rocker and the tensioner in sequence, starting the first motor so that the pacemaker wire is subjected to uniform horizontal tension, observing the value of the tensioner, adjusting the tensioner and recording the magnitude of the tension when the pacemaker wire is pulled; S2, repeating the above operations, starting the first motor and adjusting the height of the tensioner, observing the change in the value of the tensioner during the change of the height of the tensioner, recording the magnitude of the tension when the pacemaker wire is pulled, thereby determining the influence on the fixation of the pacemaker wire when it is affected by radial force; S3, starting the first motor and operating the steering mechanism, applying tension in different directions to the pacemaker wire during the reciprocating motion of the rocker, observing the change in the value of the tensioner and comparing it with the above situation, thereby determining the influence on the fixation of the pacemaker wire when it is affected by tension in different directions.

[0017] Compared with the prior art, the present invention has the following advantages: The pacemaker lead fixing inspection device of the present invention drives the winding wheel to rotate by the first motor, so as to provide a constant pulling force for the pacemaker lead on the winding wheel, thereby ensuring that the pulling force on the pacemaker lead is always a constant. Therefore, it is only necessary to change the pulling direction of the pacemaker lead, and overcome the resistance of the tensioner to the lead by the sum of the motor pulling force and the pulling force in different directions. By adjusting the tension range of the tensioner multiple times, it is determined that in each case, the tension range under which the lead fixation meets the requirements is determined, and this is used as the standard for lead fixation. Compared with the prior art which requires different driving forces of multiple motors to calculate the fixing condition of the pacemaker lead, this design optimizes the entire inspection process compared with the prior art, does not require complicated operations and calculations, and the constants and variables are clear at a glance. In the present invention, a cylinder is provided to adjust the height of the tensioner and change the angle of the pacemaker wire, so that a radial force can be provided to the pacemaker wire, thereby determining the effect on the fixation of the pacemaker wire when affected by the radial force.

[0018] In the present invention, a guide bracket is provided to provide guidance for the pacemaker wire between the tensioner, the steering mechanism and the winding wheel, so that the pulling force is always only the motor pulling force and the additional force in different directions, thereby ensuring the accuracy of the inspection result.

[0019] By setting up an electronic tensioner, the present invention can display the torque size on the display screen in real time, compared with the rotation sensor in the existing patent, which is more convenient for medical staff to observe and record.

[0020] In the present invention, a steering mechanism is provided and a motor is used to drive a rocker to rotate, so that the pacemaker wire is subjected to forces in different directions, simulating the patient's situation in real life, and detecting whether the pacemaker wire is fixed is more objective and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of an external cardiac pacemaker lead wire fixing inspection device proposed by the present invention; Figure 2 A schematic diagram of the structure of the winding wheel and the motor proposed in the present invention; Figure 3 A schematic diagram of the structure of the fixing member proposed by the present invention; Figure 4 It is a structural schematic diagram of the steering mechanism proposed by the present invention; Figure 5 For the present invention Figure 4 Cross-section of the middle AA; Figure 6 A schematic diagram of the structure of the tensioner proposed by the present invention; Figure 7A schematic diagram of the connection between the tensioner and the cylinder proposed by the present invention; Figure 8 This is a schematic diagram of the structure of the guide bracket proposed by the present invention; The above drawings include the following reference numerals: 10. Base; 11. Tensioner switch button; 12. First motor button; 13. Power switch button; 14. Reset button; 20. Winding wheel; 21. Pacemaker wire; 22. First motor; 221. Fixing member; 30. Housing; 31. Support rod; 32. Rocker; 321. Sliding member; 322. First through hole; 323. Rotating shaft; 33. Second motor; 34. Slide; 40. Tensioner; 41. Pulley; 42. Display screen; 43. Leg; 50. Cylinder; 51. Cylinder button; 60. Guide bracket; 61. Through slot; 62. Universal ball head; 621. Second through hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example 1

[0024] like Figure 1As shown, the present application discloses an external cardiac pacemaker lead fixing inspection device, comprising: a tensioner 40 and three pulleys 41 arranged on the tensioner 40, and also comprising: a base 10, a winding wheel 20 and a steering mechanism; the winding wheel 20 is connected to one side of the top of the base 10, and a cardiac pacemaker lead 21 is wound around the winding wheel 20; the tensioner 40 is connected to the other side of the top of the base 10, and the cardiac pacemaker lead 21 is clamped between the three pulleys 41; a display screen 42 is arranged on the top of the tensioner 40, and the rotation between the pulleys 41 will display the torque in real time The size of the torque can be observed through the display screen 42, and the pacemaker wire 21 is passed through the pulley 41 in sequence. When the pacemaker wire 21 is subjected to tension, the pulley 41 will be driven to rotate, thereby displaying the size of the tension in real time; the steering mechanism is connected to the top of the base 10 and is located between the tensioner 40 and the winding wheel 20. The steering mechanism is used to subject the pacemaker wire 21 to tension in different directions, simulating the pacemaker wire 21 being subjected to tension in different directions, and observing the value of the tensioner to determine whether the wire is firmly fixed.

[0025] Furthermore, if Figure 4 and Figure 5 As shown, the steering mechanism includes: a housing 30, a support rod 31 and a rocker 32; the top of the housing 30 is a semicircular structure, the semicircular structure is provided with a slide groove 34, the bottom of which is provided with a rod matching the height of the winding wheel 20 and the tensioner 40, the bottom of the housing 30 is connected to the top of the base 10 and is located between the tensioner 40 and the winding wheel 20; the top of the rocker 32 is provided with a sliding member 321 matching the slide groove 34, the center of the sliding member 321 is provided with a first through hole 322, the inner wall of the first through hole 322 is smooth, the bottom of the rocker 32 is connected by a rotating shaft 323, and the rotating shaft 323 is connected to the second motor 33 The output end is connected; the pacemaker wire 21 is passed through the first through hole 322 on the sliding member 321. After the second motor 33 is turned on, the rotating shaft 323 is driven to rotate, thereby driving the bottom of the rocker 32 to rotate. The sliding member 321 at the top of the rocker 32 reciprocates in the slide groove 34 as the second motor 33 rotates. During the reciprocating motion, the pacemaker wire 21 is passed through the smooth first through hole 322, and the pacemaker wire 21 is subjected to tension in different directions. The data of the tensioner 40 is observed to determine whether the pacemaker wire 21 is fixed firmly.

[0026] Furthermore, if Figure 6 and Figure 7As shown, two legs 43 are connected to the bottom of the tensioner 40, and the legs 43 are connected to the cylinder 50; the bottom of the cylinder 50 is connected to the other side of the base 10, and the cylinder 50 is used to change the height of the tensioner 40 to change the force direction of the pacemaker wire 21, that is, the cylinder 50 is used to realize the lifting and lowering of the tensioner 40, observe the change of the value of the tensioner 40 during the lifting process, record the tension when the pacemaker wire 21 is pulled, and compare the change of tension when not lifting and lifting and when lifting, so as to judge the influence of the radial force on the fixation of the pacemaker wire 21.

[0027] Furthermore, if Figure 2 As shown, a first motor 22 is connected to the bottom of the winding wheel 20, and the bottom of the first motor 22 is connected to one side of the top of the base 10. The pacemaker wire 21 is wound onto the winding wheel 20, and the winding wheel 20 is connected to the output shaft of the first motor 22. The pacemaker wire 21 is pulled by the rotation of the first motor 22. Compared with manual pulling, the first motor 22 has higher precision and more accurate control of force, that is, the first motor provides stable pulling force for the pacemaker wire 21. Example 2

[0028] According to the first embodiment, in order to prevent the first motor 22 from shaking, shifting, etc. during rotation, thereby affecting the accuracy of the detection data, a fixing member 221 is further provided. Figure 3 As shown, the height of the fixing member 221 matches the height of the first motor 22, and an opening matching the first motor 22 is provided on the top thereof, so that the top of the first motor 22 and the output shaft can be extended to the outside of the fixing member 221; a groove matching the first motor 22 is provided on the bottom of the fixing member 221, and the first motor 22 is connected to the groove; the bottom of the fixing member 221 is connected to one side of the top of the base 10, and the first motor 22 is prevented from shaking through the opening, and the first motor 22 is prevented from shifting through the groove, thereby never guaranteeing the accuracy of the data during the detection process. Example 3

[0029] According to the first embodiment, in order to guide the pacemaker wire 21 and ensure the stability of the pulling force, two guide brackets 60 are further provided. Figure 8 As shown, the two guide brackets 60 are connected to the top of the base 10, and the two guide brackets 60 are respectively arranged between the tensioner 40 and the steering mechanism, and between the steering mechanism and the winding wheel 20; Furthermore, a through slot 61 is provided on the top of the guide bracket 60, and a universal ball head 63 is rotatably connected in the through slot 61. The universal ball head 63 can rotate in any direction. A second through hole 621 for passing the pacemaker wire 21 is provided in the middle of the universal ball head 63. The inner wall of the second through hole 621 is smooth, and the friction force behind the second through hole 621 of the pacemaker wire 21 is negligible.

[0030] The specific operation of the external cardiac pacemaker lead fixing inspection device provided in the present invention during the inspection process is as follows: The cardiac pacemaker wire 21 is passed through the winding wheel 20, the guide bracket 60, the steering mechanism, the guide bracket 60 in sequence, and finally clamped in the pulley on the tensioner 40, and the first motor button 12 is pressed to start the first motor 22, and the first motor 22 drives the winding wheel 20 to rotate. At this time, the cardiac pacemaker wire 21 is subjected to uniform horizontal tension, and the value on the display screen of the tensioner 40 is observed. The first motor 22 continues to rotate, and the value of the tensioner 40 is adjusted. When the cardiac pacemaker wire 21 moves, the tension of the cardiac pacemaker wire 21 when being pulled is recorded at this moment; Repeat the above operation, press the first motor button 12 to start the first motor 22, press the cylinder button 51 to start the cylinder 50, realize the lifting and lowering of the tensioner 40, observe the value on the display screen of the tensioner 40, the first motor 22 continues to rotate, adjust the value of the tensioner 40, when the pacemaker wire 21 moves, record the tension when the pacemaker wire 21 is pulled, compare the change of tension with the above situation, so as to judge the influence on the fixation of the pacemaker wire 21 when it is affected by radial force; The cylinder button 51 is pressed to control the cylinder 50 to stop the lifting movement, ensuring that the pacemaker wire 21 passes smoothly through the tensioner 40 and the guide bracket 60. The first motor button 12 is pressed to start the first motor 22 and turn on the second motor 33. The first motor 22 rotates to drive the winding wheel 20 to rotate, applying horizontal tension to the pacemaker wire 21. The second motor 33 drives the rocker 32 to reciprocate in the slide groove 34. The pacemaker wire 21 passes through the rocker 32 and the universal ball head 62 on the upper side of the guide bracket 60. During the reciprocating movement of the rocker 32, tensions in different directions are applied to the pacemaker wire 21. The value changes of the tensioner 40 are observed and the tension when the pacemaker wire 21 is pulled is compared with the other two situations, so as to judge the influence on the fixation of the pacemaker wire 21 when it is affected by tensions in different directions.

[0031] After the test is completed, the reset button 14 is pressed to reset each device and the next test experiment can be carried out.

[0032] The above description of the embodiments is to facilitate the understanding and application of the present invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to the above embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention should be within the scope of protection of the present invention.

Claims

1. An external cardiac pacemaker lead fixation inspection device, comprising: The base (10) and the winding wheel (20) are characterized by further comprising: a tensioner (40) and a steering mechanism; The winding wheel (20) is connected to one side of the top of the base (10), the tensioner (40) is connected to the other side of the top of the base (10), the steering mechanism is connected to the top of the base (10) and is located between the tensioner (40) and the winding wheel (20), and the steering mechanism is used to subject the cardiac pacemaker wire (21) to tension in different directions; The cardiac pacemaker wire (21) is wound around the winding wheel (20), the steering mechanism and the tensioner (40) in sequence.

2. The device for checking the fixation of an external cardiac pacemaker lead according to claim 1, characterized in that: The steering mechanism comprises: a housing (30), a support rod (31) and a rocker (32); The top of the housing (30) is a semicircular structure, and the support rod (31) is located at the bottom of the semicircular structure; The top of the rocker (32) is slidably connected to the top of the housing (30), and the bottom is movably connected to the support rod (31).

3. The device for checking the fixation of an external cardiac pacemaker lead according to claim 2, characterized in that: A first through hole (322) is provided at the top of the rocker (32), and the first through hole (322) is used for passing the cardiac pacemaker wire (21).

4. The device for checking the fixation of an external cardiac pacemaker lead according to claim 1, characterized in that: The bottom of the tensioner (40) is connected to two legs (43), and the legs (43) are connected to the inside of the cylinder (50); The cylinder (50) is mounted on the base (10), and the cylinder (50) is used to change the height of the tensioner (40) so as to change the force direction of the pacemaker wire (21).

5. The device for checking the fixation of an external cardiac pacemaker lead according to claim 1, characterized in that: A first motor (22) is connected to the bottom of the winding wheel (20); the first motor (22) is mounted on the base (10); the first motor (22) is used to provide a stable pulling force for the cardiac pacemaker wire (21).

6. The device for checking the fixation of an external cardiac pacemaker lead according to claim 5, characterized in that: The outer casing of the first motor (22) is provided with a fixing piece (221), and the bottom of the fixing piece (221) is connected to the top of the base (10).

7. The device for checking the fixation of an external cardiac pacemaker lead according to claim 1, characterized in that: The top of the base (10) is also connected to two guide brackets (60) for maintaining a stable pulling force; The two guide brackets (60) are respectively arranged between the tensioner (40) and the steering mechanism, and between the steering mechanism and the winding wheel (20).

8. The device for checking the fixation of an external cardiac pacemaker lead according to claim 7, characterized in that: A through slot (61) is provided at the top of the guide bracket (60), a universal ball head (62) is rotatably connected in the through slot (61), and a second through hole (621) for passing the cardiac pacemaker wire (21) is provided in the middle of the universal ball head (62).

9. The method for operating the device for checking the fixation of an external cardiac pacemaker lead according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, passing the cardiac pacemaker wire (21) through the winding wheel (20), the guide bracket (60), the rocker (32) and the tensioner (40) in sequence, starting the first motor (22) so that the cardiac pacemaker wire (21) is subjected to a uniform horizontal tension, observing the value of the tensioner (40), adjusting the tensioner (40) and recording the magnitude of the tension when the cardiac pacemaker wire (21) is pulled; S2, repeating the above operation, starting the first motor (22) and adjusting the height of the tensioner (40), observing the change in the value of the tensioner (40) during the change in the height of the tensioner (40), and recording the magnitude of the pulling force when the pacemaker wire (21) is pulled, so as to determine the influence of the radial force on its fixation; S3, starting the first motor (22) and operating the steering mechanism, applying tension in different directions to the cardiac pacemaker lead (21) during the reciprocating motion of the rocker (32), observing the value change of the tensioner (40) and comparing it with the above situation, so as to determine the influence on the fixation of the cardiac pacemaker lead (21) when being affected by tension in different directions.

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